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#1
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Re: think about this...
[ QUOTE ]
doubtful, that fan doesn't look very powerful. if it did move, it would move backwards. [/ QUOTE ] pretend it's powerful enough |
#2
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Re: think about this...
[ QUOTE ]
[ QUOTE ] doubtful, that fan doesn't look very powerful. if it did move, it would move backwards. [/ QUOTE ] pretend it's powerful enough [/ QUOTE ] Can we pretend it runs on batterys too? |
#3
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Re: think about this...
[ QUOTE ]
[ QUOTE ] [ QUOTE ] doubtful, that fan doesn't look very powerful. if it did move, it would move backwards. [/ QUOTE ] pretend it's powerful enough [/ QUOTE ] Can we pretend it runs on batterys too? [/ QUOTE ] yes, whatever |
#4
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Re: think about this...
[ QUOTE ]
[ QUOTE ] doubtful, that fan doesn't look very powerful. if it did move, it would move backwards. [/ QUOTE ] pretend it's powerful enough [/ QUOTE ] i have zero college training, but the forces should balance, no? no movement of the skateboard (assuming the sail and fan are secured to the board) |
#5
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Re: think about this...
[ QUOTE ]
[ QUOTE ] [ QUOTE ] doubtful, that fan doesn't look very powerful. if it did move, it would move backwards. [/ QUOTE ] pretend it's powerful enough [/ QUOTE ] i have zero college training, but the forces should balance, no? no movement of the skateboard (assuming the sail and fan are secured to the board) [/ QUOTE ] I can't believe you're seriously answering this. It's plugged into a friggin outlet. It's not going anywhere. Holy [censored]! |
#6
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Re: think about this...
[ QUOTE ]
[ QUOTE ] [ QUOTE ] doubtful, that fan doesn't look very powerful. if it did move, it would move backwards. [/ QUOTE ] pretend it's powerful enough [/ QUOTE ] i have zero college training, but the forces should balance, no? no movement of the skateboard (assuming the sail and fan are secured to the board) [/ QUOTE ] Don't think of the sail as an opposing force, but rather as a redirecting force. If you blow into your cupped hands, you are redirecting the wind, not canceling it. |
#7
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Re: think about this...
I have seen this contraption work.
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#8
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Re: think about this...
In a perfect world, that contraption should stand perfectly still, no?
P.S. Damn thread hijacker - not everyone understand the plane problem yet! |
#9
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Re: think about this...
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In a perfect world, that contraption should stand perfectly still, no? P.S. Damn thread hijacker - not everyone understand the plane problem yet! [/ QUOTE ] this entire thread is making me wish I paid more attention in the fluid mechanics course I took. I think now that your OP has been reworded, Ray, that I understand what the situation you're actually describing is |
#10
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Re: think about this...
[ QUOTE ]
I think now that your OP has been reworded, Ray, that I understand what the situation you're actually describing is [/ QUOTE ] [img]/images/graemlins/confused.gif[/img] I didn't reword the OP at all - I only generalized that it could be basically any kind of plane, and specified there is no wind. |
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